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Published July 15, 2010 | Published
Book Section - Chapter Open

MKID multicolor array status and results from DemoCam


We present the results of the latest multicolor Microwave Kinetic Inductance Detector (MKID) focal plane arrays in the submillimeter. The new detectors on the arrays are superconducting resonators which combine a coplanar waveguide section with an interdigitated capacitor, or IDC. To avoid out-of-band pickup by the capacitor, a stepped-impedance filter is used to prevent radiation from reaching the absorptive aluminum section of the resonator. These arrays are tested in the preliminary demonstration instrument, DemoCam, a precursor to the Multicolor Submillimeter Inductance Camera, MUSIC. We present laboratory results of the responsivity to light both in the laboratory and at the Caltech Submillimeter Observatory. We assess the performance of the detectors in filtering out-of-band radiation, and find the level of excess load and its effect on detector performance. We also look at the array design characteristics, and the implications for the optimization of sensitivities expected by MUSIC.

Additional Information

© 2010 SPIE The International Society for Optical Engineering. We would like to acknowledge the National Science Foundation, grant AST-0705157 for the funding of MUSIC and this research. We would also like to acknowledge the generous support of the Gordon and Betty Moore Foundation. Finally, we would like to acknowledge the NASA Graduate Student Research Program for its support.

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